Dress when buying a gift cert from nice restaurant

I'm going to a nice restaurant to pick up a gift certificate, earlier than dinner about 4pm. It's a coat and tie restaurant. Does dress matter in that case? I don't mean I'll show up slovenly but a pair of capris and a nice shirt? I don't want to dress up just to get a gift certificate. Thanks.

Thanks--while it is hot out, naked isn't an option.;-) The maitre d' station butts up to the bar and the restaurant, out in the open which was my concern. But, since it's early, at most, there might be people at the bar but, oh well. Now I have to figure out how to deal w/ valet parking since I'll only be a minute.

Most nice places would probably also be willing to do this over the phone and mail the GC to you. Otherwise, so long as you're not wearing some kind of extremely offensive t-shirt or anything, don't stress about it.